AD7417 AD [Analog Devices], AD7417 Datasheet
AD7417
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AD7417 Summary of contents
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... Automotive Battery-Charging Applications Personal Computers GENERAL DESCRIPTION The AD7417 and AD7418 are 10-bit, 4-channel and single- channel ADCs with an on-chip temperature sensor that can operate from a single 2 5.5 V power supply. The devices contain a 15 µs successive approximation converter, a 5-channel multiplexer, a temperature sensor, a clock oscilla- tor, a track-and-hold, and a reference (2 ...
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... Test Conditions/Comments Any Channel. This Specification Is Typical for 3 5.5 V. This Specification Is Typical for 3 5.5 V. External Reference. Internal Reference. AD7417 Only. AD7417 Only. Source Impedance < 10 Ω. Typically 27 µs. Typically 10 µs. 2 5%. 2.5 V – 5%. Nominal 2 mA For Specified Performance ...
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... NOTES 1 B Version applies to AD7417 only with temperature range of –40°C to +85°C. A Version temperature range is –40°C to +125°C. For V and temperature sensor measurement error = ± 3°C. 2 See Terminology. 3 Refers to the input current when the part is not converting. Primarily due to reverse leakage current in the ESD protection diodes. ...
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... The signal is reset at the end of a serial read operation. Open-drain output. 5 REF Reference Input. An external 2.5 V reference can be connected to the AD7417 at this pin. To enable the IN on-chip reference, the REFIN pin should be tied to GND external reference is connected to the AD7417, the internal reference will shut down. ...
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... AD7416 PIN FUNCTION DESCRIPTION AD7418 PIN FUNCTION DESCRIPTION . The analog input channel is selected by writing to the REF pin should be tied to GND external reference is connected to the –5– AD7416/AD7417/AD7418 AD7418 PIN CONFIGURATION SOIC/MSOP CONVST 1 8 SDA AD7418 SCL ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD7416/AD7417/AD7418 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... AD7417ARU –40°C to +125°C AD7417ARU-REEL –40°C to +125°C AD7417ARU-REEL7 –40°C to +125°C AD7417BR –40°C to +85°C AD7417BR-REEL –40°C to +85°C AD7417BR-REEL7 –40°C to +85°C AD7418ACHIPS AD7418AR –40°C to +125°C AD7418AR-REEL –40°C to +125°C AD7418AR-REEL7 – ...
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... DAC. The AD7416, AD7417, and AD7418 are capable of running 5.5 V power supply, and the AD7417 and AD7418 accept an analog input range +VREF. The on-chip temperature sensor allows an accurate measurement of the ambient device temperature to be made. ...
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... TYPICAL CONNECTION DIAGRAM Figure 2 shows a typical connection diagram for the AD7417. Using the A0, A1, and A2 pins allows the user to select from up to eight AD7417s on the same serial bus, if desired. An external 2.5 V reference can be connected at the REF nal reference is used µF capacitor should be connected between REF and GND ...
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... The Address Pointer Register is an 8-bit register that stores an BE address that points to one of the six data registers. The first data byte of every serial write operation to the AD7416/AD7417/ AD7418 is the address of one of the data registers, which is stored in the Address Pointer Register, and selects the data register to which subsequent data bytes are written ...
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... SERIAL BUS ADDRESS 2 As with all I C compatible devices, the AD7416/AD7417/AD7418 have a 7-bit serial address. The four MSBs of this address for the AD7416 are set to 1001; the AD7417 are set to 0101, while the three LSBs can be set by the user by connecting the ...
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... WRITING TO THE AD7416/AD7417/AD7418 Depending on the register being written to, there are three different writes for the AD7416/AD7417/AD7418. 1. Writing to the Address Pointer Register for a subsequent read. In order to read data from a particular register, the Address Pointer Register must contain the address of that register. If ...
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... MASTER SERIAL BUS ADDRESS BYTE Figure 12. Reading Two Bytes of Data from the T REV. G READING DATA FROM THE AD7416/AD7417/AD7418 Reading data from the AD7416/AD7417/AD7418 is a one or two byte operation. Reading back the contents of the Configura Register. HYST tion Register is a single byte read operation, as shown in Figure ...
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... HYST temperature remains, or subsequently falls again, below T OTI is also reset when the AD7416/AD7417/AD7418 is placed in shutdown mode by setting Bit D0 of the Configuration Regis- ter to 1. The OTI output requires an external pull-up resistor. This can be connected to a voltage different from V allow interfacing between 5 V and 3 ...
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... If temperature reads are called too often, reads will overlap with conversions, aborting them continuously, which results in invalid readings. CONVERT START MODE The AD7417/AD7418 has an extra mode, set by writing to the MSB of the Config2 Register. CONVST Pin Mode By setting the CONVST Mode Bit to 1, conversions are initiated only by using the CONVST pin ...
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... AD7416/AD7417/AD7418 FAN CONTROLLER Figure 14 shows a simple fan controller that will switch ON a cooling fan when the temperature exceeds 80°C and switch it OFF again when the temperature falls below 75°C. The AD7416 can be used standalone in this application or with a serial bus interface if different trip temperatures are required. If the AD7416 ...
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... REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 8-Lead Mini Small Outline Package [MSOP] 3.00 BSC PIN 1 0.15 0.00 0.75 8 0.60 0 COPLANARITY 0. Standard Specification as defined by Philips. –17– AD7416/AD7417/AD7418 Narrow Body (R-8) Dimensions shown in millimeters and (inches) 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 5.80 (0.2284 0.50 (0.0196) 1.27 (0.0500) 1.75 (0.0688) BSC ...
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... AD7416/AD7417/AD7418 Revision History Location 8/04—Data Sheet Changed from REV REV. G. Changes to Figure Changes to READING DATA FROM THE AD7416/AD7417/AD7418 section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Changes to POWER-ON-RESET section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7/03–Data Sheet Changed from REV REV. F. Updated FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Updated SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Updated ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Updated ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Updated PRODUCT HIGHLIGHTS ...
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